PDF malware analysis — malicious · 50ca1b496fa49d31

MALICIOUS

PDF

40.9 KB Created: 2021-04-30 00:18:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: e19e32753a429eb7824571fd78a6e9af SHA-1: c6ab7ecfd011fd1dca62f871cd19dd4db511e7c1 SHA-256: 50ca1b496fa49d31c4ba7cb6fd25aa91a897662edc9fe5a42c0d10d6ca529d3b

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to external resources, including one explicitly offering a "free Roblox Military Script Executor 2021". The heuristic firings indicate that the document is designed as a lure for game hacks and potentially malicious downloads. Furthermore, the document contains an instruction to disable security software, which is a high-risk indicator. While no scripts were directly extracted, the presence of embedded URLs and the security bypass instruction suggest an attempt to trick the user into downloading and executing a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

Heuristics 5

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
Security software disable instruction high SE_SECURITY_BYPASS

Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://netcdn.xyz/app/431946152/free-roblox-military-script-executor-2021-game-hack PDF link annotation
- https://lib-stie.yai.ac.id/repository/hacking-simulator-roblox.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/how-to-cheat-infinite-jump-in-roblox.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/can-my-childs-friend-hack-roblox-game.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/cheat-roblox-jailbreak-noclip.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/roblox-robux-hack-2021-working-version.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/free-robux-codes-may-2021.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/descargar-roblox-hackeado-con-robux-infinitos-2021.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/hacks-roblox-iceboss.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/how-to-hack-roblox-account-password.pdfIn PDF document text
- https://lib-stie.yai.ac.id/repository/le-jeux-du-hack-roblox.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00003fc3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3FC3	25336 bytes
SHA-256: `bf2d526bc9acc1147f0c6c340e307c5c74bc9cf82000993f4d1697221f0653b3`
`font_01_sfnt_off00007a4c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A4C	19492 bytes
SHA-256: `036db90c2272845c25c1287378f388b8152e5508f0ced2e322ade03a7851c2cb`

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